22670220 has 48 divisors (see below), whose sum is σ = 64683360. Its totient is φ = 5930496.

The previous prime is 22670213. The next prime is 22670239. The reversal of 22670220 is 2207622.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385 + ... + 6744.

It is an arithmetic number, because the mean of its divisors is an integer number (1347570).

Almost surely, 2^22670220 is an apocalyptic number.

22670220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22670220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32341680).

22670220 is an abundant number, since it is smaller than the sum of its proper divisors (42013140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22670220 is a wasteful number, since it uses less digits than its factorization.

22670220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194 (or 7192 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22670220 is about 4761.3254457136. The cubic root of 22670220 is about 283.0209459789.

Adding to 22670220 its reverse (2207622), we get a palindrome (24877842).

The spelling of 22670220 in words is "twenty-two million, six hundred seventy thousand, two hundred twenty".